Tuck-forming attachment for sewing-machines.



Nm www.. PATENTE) MAY 29, ma.

APPLICATION FILED APR.16, 1901.

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RUSSEL G. WOODWARD, OF WAUKEGAN, AND CHESTER MoNEIL, OF CHICAGO,ILLINOIS, ASSIGNORS TO THE UNION SPECIAL SEWING MACHINE CO., OF CHICAGO,ILLINOIS, A CORPORATION OF ILLINOIS.

Specification of Letters Patent.

ratented. May 29, 1906.

Application filed April 16, 1901. Serial No. 56,063.

To L7/Z whom t may concern,.-

Be it known -that we, RUssEL G. WOOD- WARD, residing at Waukegan, in thecounty of Lake, and CHESTER McNEIL, residing at Chicago, in the countyof Cook, State of Illinois, citizens of the United States, have inventedcertain new and useful Improvements in Tuck-Forming Attachments forSewing- Machines, of which the following is a description, referencebeing had to the accompanying drawings and to the letters of referencemarked thereon.

Our invention relates to an improvement in sewing-machines; and theespecial obj ect of said invention is to provide a machine adapted toform boX-plaiting on the face of fabric.

As herein illustrated, the machine comprises four needles arranged insets of two each7 the sets being arranged so that the planecontaining-them is oblique respecting the line of feed, a single looperco erating with the two needles of each set to orm the stitches, themachine being substantially similar to that shown in Patent No. 506,538,issued to the Union Special Sewing Machine Com any and known as theUnion Special Multiple-Needle Machine.77

The invention consists, primarily, of a sewing-machine having aplurality of needles, a presser-foot and throat-plate havingcomplemental fins and grooves whereby a series of arallel continuoustucks is formed in the fabric, complemental stitch-forming mechanismcooperating with the needles to hold the ridges or tucks permanently inthe fabric, and means for flattening out the tucks.

Secondly, the invention consists of a sewing-machine having a pluralityof needles, a presser-foot and throat-plate having complemental fins andgrooves whereby a series of parallel continuous tucks is formedl in thefabric, complemental stitch-forming mechanism coperating with theneedles to hold the ridges or tucks permanently in the fabric, and meansin rearl of the needles .for flattening out the tucks.

Thirdly, the invention consists of a sewingmachine having a plurality ofsets of needles, each set composed of two or more needles set abreastand the sets arranged so that a plane containing them is oblique to theline of feed, with a presser-foot and throat-plate having complementalfins and grooves for forming a series of continuous parallel ridges inthe fabric between the needles of each set, complemental stitch-formingmechanism coperatc ing with the needles to hold the ridges permanentlyin the fabric, and means in rear of the needles for turning over orflattening out the ridges forming a plait.

Fourthly, it consists of an arrangement of needles, loopers,presser-foot, and throatlate with means for turning over the ridges ofthe fabric in opposite directions, thus forming a box-plait.

Finally, the invention consists of the combination of presser-foot andthroat-plate of suitable construction and in various details ofconstruction and arrangements of parts, all as hereinafter described,and referred to in the appended claims.

The invention is illustrated in the accompanying drawings, in WhichFigure 1 is a perspective view of a portion of a sewing-machineembodying our invention. Fig. 2 is a perspective view of thepresser-foot and throat-plate detached. Fig, 3 is a cross-sectionthrough the presser-foot and throat-plate. Fig. 4 is a sectional viewshowing the work before the ridges are bent down to form the box-plait.Fig. 5 is a similar view showing the Work after the formation of thebox-plait and Fig. 6 is a detached view of a presser-foot andthroat-plate, showing a modified form of our invention.

. In the drawings the parts of the sewingmachine proper are of thewell-known type illustrated in patent above mentioned and Y need not beherein specifically referred to.

A represents the needle-bar, which is herein shown as provided with twosets of needles arranged in pairs a a, b b, the needles of each `setbeing arranged abreast, but the sets being arranged in a plane obliqueto the line of feed, whereby a plurality of air-tucks close together maybe made permanently in the fabric. b b, respectively, are loopers c d,each carrying a single under thread coperating with the loops ofneedle-thread to form stitches.

B represents the throat-plate of the machine, having openings e e,arranged so that a line joining them is oblique respecting the line offeed and through which the needles a a, b b respectively pass. Extendingover Cooperating withl the needles a a, p

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' or tucks.

the forward part of the throat-plate and intersecting each opening e areraised fins or plates f j", fitting in grooves g g in the under side ofthe presser-foot C. When the material is inserted betweenthepresser-foot and throat-plate and the presser-foot depressed, narrowridges or tucks h are formed in the material and secured by theneedle-threads and cooperating under threads, thus making continuous andpermanently-sewed ridges Back of the needle-openings i in thepresser-foot C the latter is cut away, as shown at 7c l, the sides ofthe openings being beveled, as at m, and when the tuck passes from theneedles into the openings and against the lower edges of the openings 7cZ the tucks are bent down flat and oppositely turned, as shown in Fig.4, making a boxplait. The presser-foot has a forward projection n, whichtravels between the tucks. It will be noticed that the fin or plate f isslightly higher than the fin or plate j', the purpose of this being thatthe forward set of needles a a pass through the goods first and draw thegoods across the fin f and tend to lower the ridge or tuck, and for thispurpose the iinf is made higher in order not to draw down the goods toofar and thus lower the ridge formed by iin f below the level of thatformed by f.

In Fig. 6 a modified form of ourinvention is illustrated, in which twoneedles only are used, a b, set so that a line joining them is obliquerespecting the line of feed, and the openings c Z in the presser-footare inl advance of the needles, the ribs on the throatplate beingprovided with guiding-tongues m n, projecting out into the cut-outportions c Z, so as to aid in turning the tuck over, and in this eventthe tuck is turned before stitching. In this way the stitches will passthrough the base of the tucks, and we consider such a modication withinthe scope of our broad invention. This modification, however, forms aportion of the subjectmatter of another application, filed by us on the5th day of January, 1905, Serial No.

. means on the presser-foot for iiattening out the ridges or tucks saidneedles being` arranged in pairs, the needles of each pair operatingupon opposite sides of the fins and grooves substantially as described.

2. A sewing-mac-hine having a plurality of needles, a presser-foot andthroat-plate having complemental ridges, fins or` plates, and grooves,whereby a series of parallel continuous tucks is formed in the fabric,complemental stitch-forming mechanism coperating with the needles tohold the Iridges or tucks permanently in the fabric and means on thepresser-foot in rear of the -nedles forlflattening out the ridges saidneedles being arranged in pairs, the needles of each pair operating uponopposite sides of the fins and grooves substantially as described.

3. A sewing-machine having a` plurality of sets of needles, each setcomposed of two or more needles set abreast and the sets arranged sothat the plane containing them is oblique to line of feed, apresser-foot and .throat-plate having complemental ridges,

`fins or plates, and grooves, whereby a series of parallel continuoustucks is formed in the fabric, complemental stitch-forming mechanismcooperating with the needles to hold theridges or tucks permanently inthe fabric and means on the presser-foot in rear of the needles forflattening out the ridges in opposite directions, thus forming abox-plait substantially as described.

5. A sewing-machine provided with a plurality of needles andcomplemental stitchforming mechanism, a presser-foot and throat-platehaving coperating fins and grooves to form ridges in the fabric, saidpresser-foot being cut away in rear of the needle-openings and arrangedto deect the ridges in the fabric; substantially as described.

6. A sewing-machine provided with a plurality of needles and with apresser-foot having a` series of grooves in its under side, athroat-plate having fins or ridgesv registering with said grooves andmeans on said presserfoot in rear of said needles for deflecting thetucks in the fabric; substantially asV described.

7. A sewing-machine, provided with a presser-foot, having aseries ofgrooves in its under side, a throat-plate having Ens or IOO IIO

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ridges registering with said grooves and opening into theneedle-openings and'means on said presser-foot in rear of the needlesfor deflecting the tucks in the fabric; substantially as described.

S. In a sewing-machine provided With a presser-foot having a series ofgrooves on its under side, a throat-plate having fins or ridgesregistering With said grooves, one of said fins orridges being higherthan the other g substantially as described. l

9. In a sewing-machine provided With a presser-foot having a pluralityof grooves on its under side, one of said grooves being deeper than theother, athroat-plate having a plurality of iins or ridges of varyingheights registering With said grooves; substantially as described.

10. In a sewing-machine provided With a plurality of needles arranged sothat a line joining them is oblique to the line of feed, andcomplemental stitch-forming mechanism, a presser-foot and throat-platehaving cooperating fins and grooves, so arranged that a line joining therear ends of said iins and grooves respectively is substantiallyparallel With the line joining the needles; substantially as described.

11. In a sewing-machine provided With a presser-foot having grooves onits under side and also having suitable needle-openings, a throat-platehaving ribs registering with said grooves and having suitableneedle-openings registering with those in the presser-foot, saidneedle-openings being arranged obliquely to the line of feed, and aplurality of cut-out spaces also arranged obliquely to the line of feedg substantially as described.

12. In a sewing-machine having suitable stitch-forming mechanism, and apresserfoot and throat-plate, said presser-foot and throat-plate beingprovided with complemental grooves and ridges for forming a tuck in thefabric and the stitch-forming mechanism including a pair of needlesreciprocating upon opposite sides of thetuck, whereby the same may bepermanently held in place, means for deflecting the tuck in rear of thestitch-forming mechanism to lie in a horizontal plane; substantially asdescribed.

In testimony whereof We aiiix our signatures in presenceof tWoWitnesses.

RUSSEL G. WOODWARD. CHESTER MoNEIL.

Witnesses z J ULIUs SHIRE, EMMA KERN.

